---------------------- multipart/alternative attachment In a message dated 11/12/2004 4:12:29 AM Pacific Standard Time, davner@kaosol.net writes: Hi Dave Since so much of the sound we recognize as the piano sound comes from the condition of very top of the hammer it is therefore critical that it be clean & smooth & as free from small fibers as possible. Don was referring to using a new sample Ronsens in a voicing demo. However when using new sets My SOP is to file new sets starting with an actual reshaping of the bass using 80,120, 220, 320 , 400& sometimes 600. The finer papers are really polishers but it is the last step in a procedure that creates very "clean" sound from a new set of Hammers. Dale Erwin > . . . . . They still needed a little more, so I filed them with 1,000 grit > sandpaper . . . . . < Isn't 1000 grit about as abrasive as, say, newsprint? I'll admit that most of the hammers I've filed are on old pianos whose hammers have never been filed since they were built, and the string cuts are an eighth of an inch deep or more. Sometimes I'll re-file a job someone else botched. I seldom have a chance to do voicing on really nice grands. But even there, I've never used finer than 120 grit. Using finer seems like going past the point of diminishing returns. Does going up past 320 or so really make that much difference? I would think that under a microscope, the surface of piano hammers would look something like an overgrown back yard or maybe an Afro hairdo. Sanding something this fuzzy and fibrous with 1000 grit seems to me like "brushing" your cat with paper to smooth out its fur. What's the finest grit you ever use, and why? --David Nereson, RPT Erwins Pianos Restorations 4721 Parker Rd. Modesto, Ca 95357 209-577-8397 Rebuilt Steinway , Mason &Hamlin Sales www.Erwinspiano.com ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/b6/6d/d8/5a/attachment.htm ---------------------- multipart/alternative attachment--
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